Product Details: This fog light harness fits 2007-2014 Chevy Silverado. (Does not fit new body 2014 Silverado 1500). Use on models that do not have factory fog lights, the fuse box already contains the fuse and relay needed for installation. So there is no reason to use a switch and harness that contains a relay. Simply replace your original switch with one that has a fog light switch (You can find D1527J or 25858705 to buy the switch, about $40). This will allow your fog lights to work exactly like they came factory installed. Installation: For 2007-2013 Chevrolet Silverado 1500 For 2007-2014 Chevrolet Silverado 2500 HD For Chevrolet Silverado 3500 HD 2007-2014 Kit includes: 1 x Fog Light Wiring Harness as shown in pictures 10 x Black Zip Ties as shown in pictures